Several weeks ago my company had occasion to return an Intel motherboard for warranty replacement. The technician who boxed the old motherboard for shipment, erroneously included the I/O shield in the return. When the replacement arrived there was no I/O shield in the box. Their instructions said not to return this type of item. Unfortunately, this error has now rendered this motherboard useless because Intel refuses to provide one for use.
I have used Intel motherboards exclusively in systems that I build for over seven years (approximately 100 systems per year). This type of support, however, is causing me to re-think my choice of components I incorporate into systems that I sell.